Hey guys just wondering if anyone one is running catless downpipes but still have there secondary cats in place? would I be able to pass an emissions test with a setup like this ? also would the secondaries be sufficient to eliminate any smell? Ive looked this up already online cant find any sufficient information on this topic ...

Hey guys just wondering if anyone one is running catless downpipes but still have there secondary cats in place? would I be able to pass an emissions test with a setup like this ? also would the secondaries be sufficient to eliminate any smell? Ive looked this up already online cant find any sufficient information on this topic ...

I will have this setup in 2 weeks time. No need to worry about emissions... you can * pay * to pass if you get my drift.

Catless DPs + Stock DP-Back Exhasut -- Because you removed the primary cats (Which are the only ones that matter), you will still need a DP Fix to Pass OBD Port Testing. You probably won't pass a sniffer test with just the Secondary Cats in

I've got catless DPs with stock midpipes and stock catback. On a true cold start in my garage (with the garage door open obviously ) I smell gas easily, because the secondaries haven't warmed up yet. Once they're warm, they reduce the gas smell significantly- you can't smell it from inside the car unless windows are all the way down and you're stopped at a light. Even then I rarely ever notice the smell and it is extremely faint.

The main problem is that secondary cats will clog up. Because primary cats filtering and after they becoming worm/hot burning all kind of sh*t. If you will go just with secondary cats they will not last long...

it will tell you SOMETHING'S wrong, but might have absolutely nothing to do with the snails though. I mean if you're maxing fuel trims then you might not reach your boost targets. I guess you can look at WGDC, right?

There is a slight difference in smell from full catless to secondary cats still installed. When I had just catless downpipes and I still had secondary cats the smell was barely noticeable but still apparent compared to fully catted.

Fully catless to me is quite obnoxious. I've had a few cars with full catless modifications and I dont think I will ever go back to it. I dont miss pulling up to lights and catching a wiff of fumes.

As far as turbo's going out, smoke out the back is a common culprit, elevated Wastegate duty cycles are another, but one would need to ensure their are no boost leaks before blaming the turbo's.

Siren noises CAN be a common characteristic on this car. It's a tiny fan blade that spin's 10's of thousands of RPM's, it's going to make some noises. Obnoxious sire noises at light cruising when the car is full warmed up, along with elevated duty cycles to reach boost target and or oil consumption or smoke out the back may be a sign of turbo failure.

If your car is running like a champ, don't worry. If you have some smoke out the back it does not necessarily mean your turbo's are on the way out either.

Every scenario does not have an A + B = C

One must encompass many details before singling out that one symptom = one failure every time.

As far as turbo's going out, smoke out the back is a common culprit, elevated Wastegate duty cycles are another, but one would need to ensure their are no boost leaks before blaming the turbo's.

Siren noises CAN be a common characteristic on this car. It's a tiny fan blade that spin's 10's of thousands of RPM's, it's going to make some noises. Obnoxious sire noises at light cruising when the car is full warmed up, along with elevated duty cycles to reach boost target and or oil consumption or smoke out the back may be a sign of turbo failure.

If your car is running like a champ, don't worry. If you have some smoke out the back it does not necessarily mean your turbo's are on the way out either.

Every scenario does not have an A + B = C

One must encompass many details before singling out that one symptom = one failure every time.

This.

Your best bet is to start datalogging. If you don't know how to interpret the logs, post em here & we'll be happy to point you in the right direction.